US PATENT SUBCLASS 521 / 74
.~.~.~ By incorporation of material in gaseous state

Current as of: June, 1999
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521 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {3}
50  DF  .~ CELLULAR PRODUCTS OR PROCESSES OF PREPARING A CELLULAR PRODUCT, E.G., FOAMS, PORES, CHANNELS, ETC. {27}
73  DF  .~.~ Process of preparing a cellular product of a plastisol of a solid polymer derived solely from ethylenically unsaturated monomers; forming a plastisol of a solid polymer derived solely from an ethylenically unsaturated monomer which is designed to be formed into a cellular product, or composition thereof {2}
74.~.~.~ By incorporation of material in gaseous state

DEFINITION

Classification: 521/74

By incorporation of material in gaseous state:

(under subclass 73) Subject matter wherein a material in a gaseous state is introduced into the plastisol composition.

(1) Note. Included herein is the introduction of air as by beating or whipping.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73+, for processes wherein a gas is formed in situ in a plastisol composition.